KR102650680B1 - Sewer pipe non-digging partial repair device with improved performance and a sewer pipe non-digging partial repair method using thereof - Google Patents

Abstract

The present invention relates to a sewer pipe non-dig partial repair device with improved work performance, which includes a cylindrical body, a plurality of wheels provided at both ends of the body to enable movement of the body in the longitudinal direction of the pipe within the pipe, and a cylindrical outer peripheral surface of the body. A first expansion member whose both ends are in contact with the main body and sealed in a form that surrounds the outer circumferential surface of the first expansion member, and a second expansion member whose both ends are in contact with the main body and sealed, and a repair material for repairing damaged parts of the pipe is attached to the outer circumferential surface, A first fluid supply unit communicating with the space between the first expansion member and the main body to supply fluid, a second fluid supply unit communicating with the space between the first expansion member and the second expansion member to supply fluid, and a second expansion member; It includes a third fluid supply unit that supplies fluid to the space between the inner peripheral surfaces of the pipe, and after attaching the repair material to the inner wall of the sewer pipe, the expansion member can be easily separated from the repair material without damaging the repair material, and is effective even in curved parts of the sewer pipe. This relates to a trenchless partial repair device for sewer pipes that can carry out repair work.

Description

Sewer pipe non-digging partial repair device with improved performance and a sewer pipe non-digging partial repair method using the same {Sewer pipe non-digging partial repair device with improved performance and a sewer pipe non-digging partial repair method using the same}

The present invention relates to a trenchless partial repair device for sewer pipes, and more specifically, to a trenchless partial repair device for sewer pipes with improved performance in repair work.

In general, underground pipes such as water pipes, sewage pipes, gas pipes, communication pipes, etc. are flooded by rainwater or damaged by structural deterioration, subsidence of the underground ground, changes in earth pressure on the ground, and cracks and damage due to external loads. Because internal wastewater seeps into the ground, contaminating the soil or causing ground erosion, maintenance of underground pipes is frequently required.

In order to restore damaged underground pipelines, various methods are used and are appropriately selected depending on the characteristics and conditions of the damaged area. At this time, in the case of relatively small sewer pipes with a diameter of 200 to 700 mm, workers cannot enter the inside of the sewer pipe, so repair work is usually performed through grouting or lining methods.

The grouting method is a method of spraying a certain amount of liquid repair material from a repair device onto the damaged area and then hardening it to repair local damage to the pipe. It blocks the damaged area or gap in the pipe with the repair material to prevent water from passing through. It is a public method. However, the grouting method is effective in water-proofing the water-proof function by allowing the liquid repair material to escape into the damaged area of the pipe, mix and absorb into the soil around the pipe, and harden over time, but lining the inner wall of the pipe for the purpose of reinforcement. The reinforcing function it performs is uncertain.

The lining method is a method used when the degree of damage is severe and additional reinforcement is required. If the damaged area of the pipe is large or the damage goes around the entire inside of the pipe and grouting work is not possible, a separate repair material (lining material) is applied to the inner wall of the pipe. This is a method of reinforcing damaged areas over a wide area by attaching it to a sewer pipe, and is done through a partial sewer pipe repair machine called a packer.

In other words, inspection equipment equipped with CCTV is put into the pipeline to inspect where the damaged part is in the pipeline, and then this is marked on the towing line that moves the inspection equipment to confirm the location of the damaged part.

After that, before inserting the repair machine into the pipe, the position marked on the traction line of the inspection equipment is marked on the traction line for moving the repair machine, and then a rubber expansion member is covered on the outer circumference of the hollow frame, and a repair material (e.g., a repair material) is placed around the air tube. After placing the repair device on the damaged area by moving the repair device attached (fabric such as felt impregnated with a hardener), compressed air is applied to the expansion member to expand it, thereby attaching the repair material to the inner wall of the sewer pipe, thereby completing the repair work on the pipe. I do it.

The purpose of the present invention is to provide a sewer pipe non-dig partial repair device that can easily separate the expansion member from the repair material without damaging the repair material after attaching the repair material to the inner wall of the sewer pipe in the lining method.

Another object of the present invention is to provide a sewer pipe trenchless partial repair device that can effectively harden the repair material attached to the inner wall of the sewer pipe.

Another object of the present invention is to provide a sewer pipe trenchless partial repair device that can effectively perform repair work even in curved areas of the sewer pipe.

A sewer pipe non-dig partial repair device according to an embodiment of the present invention includes a cylindrical body, a plurality of wheels provided at both ends of the body to enable movement of the body in the longitudinal direction of the pipe, and surrounding the cylindrical outer peripheral surface of the body, and both ends. A first expansion member fixed and sealed to the main body, a second expansion member that surrounds the outer peripheral surface of the first expansion member, both ends of which are fixed and sealed to the main body, and a repair material for repairing damaged parts of the pipe is attached to the outer peripheral surface, the first expansion member A first fluid supply part communicating with the space between the expansion member and the main body to supply fluid, a second fluid supply part communicating with the space between the first expansion member and the second expansion member to supply fluid, the second expansion member and the pipe It includes a third fluid supply part that supplies fluid to the space between the inner circumferential surfaces and a plurality of UV light irradiation parts disposed on the outer circumferential surface of the first expansion member, and the second expansion member is made of a material capable of transmitting UV light.

In the sewer pipe non-dig partial repair device according to an embodiment of the present invention, the main body includes a cylindrical body portion having a first radius and two flange portions disposed at both ends of the body portion and having a second radius larger than the first radius. It includes, the first fluid supply part penetrating the flange part and the body part and communicating with the space between the first expansion member and the main body from the outside, and the second fluid supply part penetrating the flange part and communicating with the first expansion member and the second expansion member from the outside. It communicates with the space between the expansion members, and the third fluid supply part has a first extension part, one end of which is connected to a part penetrating the flange part of the second fluid supply part, extending in a radial outer direction from the outer peripheral surface of the flange part, and It includes a second extension part, one end of which is connected to the other end of the first extension part, and a third extension part extending in the longitudinal direction of the body part and one end of which is connected to the other end of the second extension part. In one embodiment, the second extension and the third extension are capable of changing length, and the third extension includes a heating unit.

In the sewer pipe non-dig partial repair device according to an embodiment of the present invention, the main body includes a first main body and a second main body, and a connecting part connecting the first main body and the second main body, and the connecting part is connected to the first main body. It includes a first connection ring portion, a second connection ring portion connected to the second main body, and a pleated film whose both ends are connected to the first body and the second body and covers the space between the first body and the second body.

According to an embodiment of the present invention, it is possible to provide a sewer pipe non-dig partial repair device that can easily separate the expansion member from the repair material without damaging the repair material after attaching the repair material to the inner wall of the sewer pipe.

According to an embodiment of the present invention, it is possible to provide a sewer pipe trenchless partial repair device that can effectively harden the repair material attached to the inner wall of the sewer pipe.

According to an embodiment of the present invention, it is possible to provide a sewer pipe non-dig partial repair device that can effectively perform repair work even in curved parts of the sewer pipe.

Figure 1 is a perspective view of a sewer pipe trenchless partial repair device according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a sewer pipe trenchless repair device in preparation for repair construction according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of the progress of repair work of a sewer pipe trenchless partial repair device according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of a state before repair work of a sewer pipe trenchless partial repair device according to an embodiment of the present invention.
Figure 5 is a schematic diagram illustrating a sewer pipe non-dig partial repair device according to an embodiment of the present invention being placed in a sewer pipe and repair work in progress.

Specific structural or functional descriptions of embodiments of the present invention are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Terms such as first or second may be used to describe various components, but these terms should be interpreted only for the purpose of distinguishing one component from another component. For example, a first component may be named a second component, and similarly, the second component may also be named a first component.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected or connected to the other component, but that other components may exist in between.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Additionally, when describing an embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description is omitted.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are the same as those commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. It has meaning. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are illustrative, and the present invention is not limited to the matters shown. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When ‘includes’, ‘has’, ‘consists of’, etc. mentioned in this specification are used, other parts may be added unless ‘only’ is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as ‘~on top’, ‘~at the top’, ‘~at the bottom’, ‘~next to’, etc., ‘immediately’ Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

When an element or layer is referred to as being “on” another element or layer, it includes instances where the element or layer is directly on top of or intervening with the other element. Like reference numerals refer to like elements throughout the specification.

The size and thickness of each component shown in the drawings are shown for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the components shown.

Each feature of the various embodiments of the present invention can be partially or fully combined or combined with each other, and as can be fully understood by those skilled in the art, various technical interconnections and operations are possible, and each embodiment may be implemented independently of each other. It may be possible to conduct them together due to a related relationship.

Hereinafter, embodiments of the present disclosure will be described with reference to the attached drawings. In the accompanying drawings, identical or corresponding components are given the same reference numerals. Additionally, in the description of the following embodiments, overlapping descriptions of identical or corresponding components may be omitted. However, even if descriptions of components are omitted, it is not intended that such components are not included in any embodiment.

Figure 1 is a perspective view of a sewer pipe trenchless partial repair device 1 according to an embodiment of the present invention. Figure 2 is a cross-sectional view of the sewer pipe trenchless partial repair device (1) in a state of preparation for repair construction according to an embodiment of the present invention. Figure 3 is a cross-sectional view of the repair construction progress of the trenchless partial repair device 1 for sewer pipes according to an embodiment of the present invention.

The sewer pipe non-dig partial repair device 1 according to an embodiment of the present invention includes a main body 10 and a plurality of units at both ends of the main body 10 so that the main body 10 can be moved in the longitudinal direction of the pipe within the pipe. It may include a wheel 20.

In one embodiment, the main body 10 of the sewer pipe trenchless partial repair device 1 is formed in a cylindrical shape and may include both circular end surfaces.

In one embodiment, the main body 10 includes a cylindrical body 11 having a first radius and two flange portions 12 disposed at both ends of the body 11 and having a second radius greater than the first radius. ) may include. The flange portion 12 may have a flat cylindrical shape. Both end surfaces of the main body 10 may be located on the flange portion 12, and the wheel 20 may be connected to the flange portion 12.

The first radius of the body portion 11 and the second radius of the flange portion 12 may be of a size suitable for the diameter of the pipe and may be formed in various ways depending on the situation. In one embodiment, the first radius may be approximately 300 mm and the second radius may be approximately 330 mm. In another embodiment, the first radius may be approximately 1000 mm and the second radius may be approximately 1100 mm. The first radius and the second radius are not limited to the above values, and can be formed in various ranges suitable for the situation.

In one embodiment, four wheels 20 may be included at each end of the main body 10. The wheels 20 may be arranged at predetermined intervals along the outer circumference of one end surface of the main body 10. The wheel 20 may be arranged to protrude outward from the outer circumference of the end surface of the main body 10. In this way, the wheel 20 is arranged along the outer circumference of the end surface of the main body 10 so as to protrude outward from the outer circumferential boundary of the end surface of the main body 10, so that the wheel 20 supports the inner circumferential surface of the pipe and the main body 10 It can be moved away from the inner circumferential surface of the pipe.

In one embodiment, the wheel 20 may be connected to the main body 10 through a support portion, and the support portion may include an axle portion extending in a vertical direction from an end surface of the main body 10, and the wheel 20 may include It can be coupled to the support so that it can rotate around the shaft. By rotating the wheel 20 in this way, the sewer pipe trenchless repair device 1 can move more flexibly within the pipe.

In one embodiment, the wheel 20 may be configured to be operable by a power source (not shown) mounted on the main body 10. However, the method of moving the main body 10 is not limited to this.

In the sewer pipe non-dig partial repair device 1 according to an embodiment of the present invention, the main body 10 may include various photographing members (not shown) that can photograph the inside of the pipe, such as CCTV. The photographing member may be provided to be able to rotate 360 degrees, or may be equipped with lighting equipment such as a fluorescent lamp, an incandescent lamp, an LED lamp, or a combination thereof to be able to film the relatively dark interior of the pipe. Here, the photographing member may be connected to a cable, and power may be supplied to the photographing member through the cable, or may be configured to transmit image signals captured by the photographing member to equipment disposed outside the conduit, such as a display unit.

The sewer pipe non-dig partial repair device (1) according to an embodiment of the present invention includes a first expansion member (31) and a first expansion member (31) that surrounds the cylindrical outer peripheral surface of the main body (10) and is sealed at both ends in contact with the main body (10). It may include a second expansion member 32 that surrounds the outer peripheral surface of the expansion member 31 and is sealed at both ends in contact with the main body 10, and a repair material 60 for repairing damaged portions of the pipe is attached to the outer peripheral surface. Specifically, the first expansion member 31 may be arranged to surround the cylindrical outer peripheral surface of the body portion 11 of the main body 10, and the second expansion member 32 may be disposed to surround the body portion 11 of the main body 10. It may be arranged to surround the outer circumferential surface of the first expansion member 32, which surrounds the cylindrical outer circumferential surface. That is, the body portion 11 may be double surrounded by the first expansion member 31 and the second expansion member 32.

In the sewer pipe trenchless partial repair device 1 according to an embodiment of the present invention, a predetermined space may be formed between the first expansion member 31 and the body portion 11. That is, the first expansion member 31 may be arranged to surround the body portion 11 while leaving a predetermined gap with the outer peripheral surface of the body portion 11. In one embodiment, a predetermined space may be formed between the second expansion member 32 and the first expansion member 31. That is, the second expansion member 32 may be arranged to surround the first expansion member 31 while leaving a predetermined gap with the outer peripheral surface of the first expansion member 31.

A sewer pipe non-dig partial repair device (1) according to an embodiment of the present invention includes a first fluid supply unit (41) that communicates with the space between the first expansion member (31) and the main body (10) to supply fluid; It may include a second fluid supply unit 42 that communicates with the space between the first expansion member 31 and the second expansion member 32 and supplies fluid. The fluid supplied through the first fluid supply unit 41 and the second fluid supply unit 42 may be, for example, air.

In one embodiment, both ends of the first expansion member 31 and the second expansion member 32 may be connected to the flange portion 12. The first fluid supply part 41 may penetrate the flange part 12 and the body part 11 and communicate with the space between the first expansion member 31 and the main body 10 from the outside. The second fluid supply part 42 may penetrate the flange part 12 and communicate with the space between the first expandable member 31 and the second expandable member 32 from the outside.

In one embodiment, the first expansion member 31 and the second expansion member 32 may be formed of an elastic material. For example, the first expansion member 31 and the second expansion member 32 may be made of a rubber material.

In one embodiment, when the first fluid supply unit 41 communicates with the space between the first expansion member 31 and the main body 10 to supply fluid, the first expansion member 31 expands by the supplied fluid. can do. Specifically, the first expansion member 31 may expand in a radial outward direction of the main body 10.

In one embodiment, when the second fluid supply unit 42 is in communication with the space between the second expansion member 32 and the first expansion member 31 to supply fluid, the supplied fluid is used to supply fluid to the second expansion member 32. ) can expand. Specifically, the second expansion member 32 may expand in a radial outward direction of the main body 10.

The first fluid supply unit 41 and the second fluid supply unit 42 may be connected to a fluid storage unit outside the pipe, and the fluid supplied from the fluid supply unit may be supplied to the sewer pipe non-dig partial repair device 1. In one embodiment, the fluid supply may be an air pump. In one embodiment, the fluid supply unit may be mounted on a sewer pipe repair vehicle.

When the fluid is supplied by the first fluid supply unit 41 and the second fluid supply unit 42, the first expansion member 31 and the second expansion member 32 are located outside the radius of the sewer pipe non-excavating part repair device 1. expands in the direction At this time, a maintenance material 60 is attached to the outer peripheral surface of the second expansion member 32. As the second expansion member 32 expands, it comes into close contact with the inner peripheral surface of the pipe. As a result, the repair material 60 attached to the outer peripheral surface of the second expansion member 32 is attached to the inner peripheral surface of the pipe. The sewer pipe non-dig partial repair device (1) of the present invention expands the second expansion member (32) to which the repair material (60) is attached to the outer circumferential surface at the damaged portion of the pipe, and brings it into close contact with the damaged portion of the inner peripheral surface of the pipe, Repair work is performed by attaching the repair material (60) to the damaged part of the pipe and finishing the damaged part.

The sewer pipe trenchless partial repair device 1 according to an embodiment of the present invention may include a plurality of UV light irradiation units 50 disposed on the outer peripheral surface of the first expansion member 31. In one embodiment, repair material 60 may include a UV light curable material. When the repair material 60 is attached to the inner peripheral surface of the pipe by expanding the second expansion member 32 to which the repair material 60 is attached to the outer peripheral surface and coming into close contact with the damaged portion of the inner peripheral surface of the pipe, the UV light irradiation unit 50 is connected to the repair material 60. The repair material 60 can be hardened by irradiating UV light. At this time, the first expansion member 31 on which the UV light irradiation unit 50 is disposed expands in the radial outer direction of the sewer pipe no-dig partial repair device 1 by the fluid supplied from the first fluid supply unit 41 and 2 Closely adheres to the inside of the expansion member (32). Additionally, at this time, the second expansion member 32 may be formed of a material capable of transmitting UV light. Because of this, the UV light irradiated from the UV light irradiation unit 50 can pass through the second expansion member 32 and reach the repair material 60 without loss. Because of this, it is possible to effectively harden the repair material 60.

The sewer pipe non-dig partial repair device 1 according to an embodiment of the present invention may include a third fluid supply unit 43 that supplies fluid to the space between the second expansion member 32 and the inner peripheral surface of the pipe. . The fluid supplied through the third fluid supply unit 43 may be, for example, air.

In one embodiment, the third fluid supply part 43 may include a first extension part 431, one end of which is diverged from a portion penetrating the flange part 12 of the second fluid supply part 42. That is, the third fluid supply unit 43 may be a branch passage of the second fluid supply unit 42.

In one embodiment, the third fluid supply part 43 extends from the outer peripheral surface of the flange part 12 in a radial outer direction of the flange part 12, and has one end connected to the other end of the first extension part 431. It may include an extension part 432 and a third extension part 433 that extends in the longitudinal direction of the body part 11 and has one end connected to the other end of the second extension part 432. That is, the second extension part 432 and the third extension part 433 may be connected in a direction perpendicular to each other. However, this is only one embodiment of the present invention, and the second extension part 432 and the third extension part 433 are not necessarily connected only in the vertical direction, and may be connected at various angles in other embodiments.

In one embodiment, the second extension part 432 and the third extension part 433 may be formed to have length variations. That is, the second extension portion 432 may be extended or shortened in the radial direction of the flange portion 12, and the third extension portion 433 may be extended or shortened in the longitudinal direction of the body portion 11.

In one embodiment, the third extension part 433 may include a heating part 434. The heating unit 434 may be an electric heating wire. Hot fluid can be supplied from the third fluid supply unit 43 by the heating unit 434.

In the sewer pipe trenchless partial repair device 1 according to an embodiment of the present invention, the repair material 60 may include a thermosetting material. In this embodiment, after the maintenance material 60 attached to the second expansion member 32 is attached to the inner peripheral surface of the pipe, hot fluid is supplied from the third fluid supply unit 43 to the maintenance material 60 by the heating unit 434. By supplying, the repair material 60 can be hardened.

In the sewer pipe non-dig partial repair device (1) according to an embodiment of the present invention, after the repair material (60) attached to the inner peripheral surface of the pipe is hardened, the space between the first expansion member (31) and the main body (10) Repair work can be completed by discharging the fluid in the space between the fluid and the second expansion member 32 and the first expansion member 31 to the outside, and separating it from the pipe as the second expansion member 32 contracts. At this time, a problem occurs in which part of the repair material 60 remains attached to the second expansion member 32 and falls off from the pipe along the second expansion member 32. For this reason, before discharging the fluid in the space between the first expansion member 31 and the main body 10 and the fluid in the space between the second expansion member 32 and the first expansion member 31 to the outside, the maintenance material 60 There is a need to take preliminary measures to ensure that it is completely removed from the second expansion member 32.

The sewer pipe non-dig partial repair device (1) according to an embodiment of the present invention is a space between the second expansion member (32) and the inner peripheral surface of the pipe to which the repair material (60) is attached through the third fluid supply part (43). Supply fluid. Due to the pressure of the fluid, the repair material 60 can be gently separated from the second expansion member 32 from its end. As a result, the fluid in the space between the first expansion member 31 and the main body 10 and the fluid in the space between the second expansion member 32 and the first expansion member 31 are discharged to the outside to form the second expansion member 32. ) is contracted, it is possible to prevent the repair material 60 from falling off from the inner peripheral surface of the pipe together with the second expansion member 32.

The sewer pipe trenchless partial repair device 1 according to an embodiment of the present invention may further include a control unit (not shown). The controller may control the length deformation of the second extension part 432 and the third extension part 433 of the third fluid supply part 43. Additionally, the control unit can control the operation of the heating unit 434. Additionally, the control unit may control the operation of the UV light irradiation unit 50. Additionally, the control unit may control the flow rate and pressure of the fluid supplied to the third fluid supply unit 43. Accordingly, by controlling the fluid pressure and flow rate to an appropriate level when supplying fluid to the space between the second expansion member 32 and the inner peripheral surface of the pipe to which the repair material 60 is attached, the repair material 60 is connected to the second expansion member. It can be removed from (32) without damage.

Figure 4 is a cross-sectional view of the sewer pipe trenchless partial repair device 1 before repair construction according to an embodiment of the present invention.

In the sewer pipe non-dig partial repair device 1 according to an embodiment of the present invention, the main body 10 includes a first main body 110 and a second main body 120, and a first main body 110 and a second main body. It may include a connection portion 130 connecting 120.

In one embodiment, the connection portion 130 includes a first connection ring portion 131 connected to the first body 110 and a second connection ring portion 132 connected to the second body 120, and both ends of the first connection ring portion 130 are connected to the first body 110. It may include a pleated film 133 that is connected to the 110 and the second body 120 and covers the space between the first body 110 and the second body 120.

In one embodiment, the first connection ring portion 131 may include a first ring portion 131-1 and a first support portion 131-2, and the second connection ring portion 132 may include a second ring portion 131-1. It may include a part 132-1 and a second support part 132-2. The first connection ring portion 131 and the second connection ring portion 132 may be connected by ring bonding of the first ring portion 131-1 and the second ring portion 131-2.

In one embodiment, the first support part 131-2 and the second support part 132-2 may be formed in a multi-stage bar shape so that the length can be changed.

In one embodiment, the pleated film 133 may be flexible and stretchable in the longitudinal direction of the main body 10, and may also be bent in a direction perpendicular to the longitudinal direction of the main body 10.

As described above, the first body 110 and the second body 120 are connected by ring bonding of the first ring portion 131-1 and the second ring portion 131-2, and both ends are 1 The pleated film 133, which is connected to the main body 110 and the second main body 120 and covers the space between the first main body 110 and the second main body 120, is flexible and moves in the longitudinal direction of the main body 10. Since it can be stretched and bent in a direction perpendicular to the longitudinal direction of the main body 10, the first main body 110 and the second main body 120 can be connected in a way that allows a predetermined relative movement. Since the relative movement of the first body 110 and the second body 120 is allowed, the main body 10 of the sewer pipe trenchless partial repair device 1 can be bent. In other words, the sewer pipe non-dig partial repair device 1 according to the relevant embodiment can pass through a curved pipe rather than a straight pipe. In addition, repair work on curved parts of the pipe is also possible.

Figure 5 is a schematic diagram showing how the sewer pipe non-dig partial repair device 1 according to an embodiment of the present invention is placed in a sewer pipe and repair work is in progress.

Hereinafter, the process of performing a repair process for a partial repair location within the pipeline will be roughly described.

First, the sewer pipe non-dig partial repair device (1) can be placed around the manhole (3) and the inside of the pipe can be checked using a camera, etc. to confirm the partial repair location in advance. At this time, a repair material 60 is attached to the outer peripheral surface of the second expansion member 32.

Afterwards, the sewer pipe trenchless partial repair device (1) is inserted into the pipe and moved along the pipe. The sewer pipe trenchless partial repair device (1) can be moved inside the pipe in various ways. For example, the sewer pipe trenchless partial repair device 1 is connected to a towing line, and the sewer pipe trenchless partial repair device 1 can be moved by the operation of a tow vehicle or the like outside the pipe. In this way, the sewer pipe trenchless partial repair device 1 can be moved to the damaged area inside the pipe. At this time, when there is a bend in the pipe, the bend can be easily passed through the connection structure of the first body 110 and the second body 120. Alternatively, when the partial repair position is located at a bend in the pipe, the sewer pipe trenchless partial repair device 1 is stopped at the bend.

When the sewer pipe non-dig part repair device (1) is located in the repair part, fluid is supplied to the first fluid supply part (41) and the second fluid supply part (42) to form the first expansion member (31) and the second expansion member (32). ) expands. The second expansion member 32 to which the repair material 60 is attached expands and comes into close contact with the inner peripheral surface of the pipe, and as a result, the repair material 60 lines the inner peripheral surface of the pipe.

Afterwards, power is applied to the UV light irradiation unit 50 to cure the repair material 60. Alternatively, the repair material 60 is cured by supplying hot fluid to the repair material 60 through the third fluid supply portion 43 while applying power to the heating unit 434. Alternatively, if the repair material 60 is not sufficiently hardened, the fluid is supplied at an appropriate pressure and flow rate to the space between the repair material 60 attached to the inner peripheral surface of the pipe through the third fluid supply part 43 and the second expansion member 32. By supplying, the repair material 60 is removed from the second expansion member 32 from its end.

Afterwards, the fluid in the space between the first expansion member 31 and the main body 10 and the space between the second expansion member 32 and the first expansion member 31 is discharged to the outside and the first expansion member 31 ) and the second expansion member 32 is contracted. When the first expansion member 31 and the second expansion member 32 are completely contracted, the sewer pipe trenchless partial repair device 1 is recovered to complete the repair work.

Although the technical idea of the present disclosure has been described through some embodiments and examples shown in the accompanying drawings, it does not go beyond the technical idea and scope of the present disclosure that can be understood by a person skilled in the art to which the present disclosure pertains. It should be noted that various substitutions, modifications and changes may be made within the scope. Additionally, such substitutions, modifications or changes should be understood to fall within the scope of the appended claims.

1: Sewer pipe trenchless repair device
10: body
20: wheels
31: first expansion member
32: Second expansion member
41: first fluid supply part
42: second fluid supply unit
43: Third fluid supply part
50: UV light irradiation unit
60: Repair material

Claims (3)

Cylindrical body;
A plurality of wheels provided at both ends of the main body to enable movement of the main body in the longitudinal direction of the pipe within the pipe;
a first expansion member that surrounds the cylindrical outer peripheral surface of the main body and whose both ends are fixed and sealed to the main body;
a second expansion member surrounding the outer peripheral surface of the first expansion member, both ends of which are fixed and sealed to the main body, and a repair material for repairing damaged portions of the pipe is attached to the outer peripheral surface;
a first fluid supply unit communicating with the space between the first expansion member and the main body to supply fluid;
a second fluid supply unit communicating with the space between the first expansion member and the second expansion member to supply fluid;
a third fluid supply unit supplying fluid to the space between the second expansion member and the inner peripheral surface of the pipe; and
a plurality of UV light irradiation units disposed on the outer peripheral surface of the first expansion member;
Including,
The second expansion member is formed of a material capable of transmitting UV light,
The main body includes a first main body and a second main body, and a connection part connecting the first main body and the second main body,
The connection portion includes a first connection ring portion connected to the first body, a second connection ring portion connected to the second body, and both ends are connected to the first body and the second body, respectively, so that the first connection ring portion and the second connection portion are connected to the first body and the second body. 2 It includes a pleated membrane covering the space between the bodies,
The first connection ring portion and the second connection ring portion each include a ring portion and a support portion,
The pleated film has flexibility, can be stretched and contracted in the longitudinal direction of the main body, and can also be bent in a direction perpendicular to the longitudinal direction of the main body,
The first body and the second body are connected in a way to allow a predetermined relative movement by a connection between the ring portions of the first connection ring portion and the second connection ring portion and a pleated membrane,
Each of the first body and the second body includes a cylindrical body portion having a first radius and a flange portion disposed at one end of the body portion and having a second radius greater than the first radius,
The first fluid supply portion penetrates the flange portion and the body portion and communicates with the space between the first expansion member and the main body from the outside,
The second fluid supply portion penetrates the flange portion and communicates with the space between the first expansion member and the second expansion member from the outside,
The third fluid supply part has a first extension part connected to a portion penetrating the flange part of the second fluid supply part, extends from the outer peripheral surface of the flange part in a radial outer direction of the flange part, and has one end connected to the flange part of the second fluid supply part. It includes a second extension part connected to the other end of the first extension part, and a third extension part extending in the longitudinal direction of the body part and having one end connected to the other end of the second extension part,
The second extension portion and the third extension portion can be modified in length,
The third extension includes a heating unit that is an electric heating wire,
Sewer pipe trenchless repair device. delete delete